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| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Data Dictionary and Time Zones | 5% | - CURRENT_DATE, CURRENT_TIMESTAMP, LOCALTIMESTAMP - INTERVAL data types - Using data dictionary views |
| Topic 2: Using SET Operators | 5% | - Matching SELECT statements - Using ORDER BY with set operations - UNION, UNION ALL, INTERSECT, MINUS operators |
| Topic 3: Controlling User Access | 5% | - Roles creation and privilege assignment - System vs object privileges - Granting privileges on tables |
| Topic 4: Using Subqueries | 5% | - Single-row and multi-row subqueries - Correlated subqueries for update and delete |
| Topic 5: Managing Indexes, Synonyms, Sequences | 5% | - Create and manage indexes - Create and manage sequences - Create and manage synonyms |
| Topic 6: Retrieving and Sorting Data | 15% | - Using SELECT statement and column aliases - Operator precedence rules - Operators, literals, DISTINCT keyword - Arithmetic expressions and NULL values - Limiting rows and substitution variables - DEFINE and VERIFY commands - Sorting query results |
| Topic 7: Relational Database Concepts | 5% | - SQL SELECT clauses and ERD components - Relational database theoretical and physical aspects - Relationship between database and SQL |
| Topic 8: Using Functions | 25% | - Restricting group results - TO_CHAR, TO_NUMBER, TO_DATE conversion functions - Date arithmetic and date functions - ROUND, TRUNC, MOD functions - Data type conversion: implicit and explicit - Group functions and grouping data - Character functions for string manipulation - NVL, NULLIF, COALESCE functions - Nested functions |
| Topic 9: DDL for Tables and Relationships | 15% | - Table structure, columns, data types - CREATE TABLE statement - Constraints management - Drop columns, set unused columns - Views management - TRUNCATE TABLE statement - Temporary and external tables |
| Topic 10: Displaying Data from Multiple Tables | 10% | - Cartesian products - Different types of joins: equijoin, non-equijoin, outer join, self-join |
| Topic 11: Managing Tables with DML | 5% | - Multi-table INSERT and MERGE statements - Transaction management and control - INSERT, UPDATE, DELETE operations |
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NEW QUESTION # 98
What is the difference between UNION and UNION ALL?
Answer: B
NEW QUESTION # 99
Which of the following is an example of an object privilege?
Answer: B
NEW QUESTION # 100
What is the purpose of a correlated subquery?
Answer: A
NEW QUESTION # 101
Which clause is used to ensure that only specific rows are deleted in a DELETE statement?
Answer: C
NEW QUESTION # 102
What does the COMMIT statement do in SQL?
Answer: B
NEW QUESTION # 103
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